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Following completion of all tasks, the Problem Assessment Report and Project Status Report of <br /> %= =- Ground-Water Monitoring were issued by W.W. Irvin, Inc. on August 8, 1995. Monitoring <br /> G= activities conducted on October 18, 1995 were documented in the Project_ Status Report dated <br /> } October 31, 1995. The Remedial Action Plan with feasibility study were issued on December <br /> 28, 1995; W.W. Irvin, Inc. has recommended bioventing with continued ground-water <br /> _. monitoring as the best, cost-effective technologies for cleanup of affected soil and ground water. <br /> GROUND-WATER MONITORING: JANUARY 16, 1996 <br /> Ground-Water Soundings <br /> Monitoring wells MW-4, MW-5, MW-6, MW-7, and MW-8 were again sounded on January 16, <br /> 1996 utilizing a Keck''' interface probe; the W.W. Irvin, Inc. staff geologist intercepted the <br /> k: piezometric surface at an average depth of 14.05 feet below the tops of the well casings (see <br /> Table 2). The average depth to the water table has risen 1.58 feet since October 18, 1995 when <br /> the average depth to the water table was 15.63 feet. Table 3 lists clock times of soundings for <br /> monitoring activities performed since September 19, 1994, with Stockton-corrected times and <br /> heights of highest & lowest tides. Using the three-point method, the calculated Iocal ground- <br /> water flow direction on January 16, 1996 was approximately N77E along a gradient of 0.013 <br /> foot/foot. Between October 18 and January 16, the flow direction has shifted 16° to the north, <br /> but has remained easterly (see the Ground-Water Gradient Map, Figure 3). <br /> i <br /> W.W. lrmn, Inc. <br /> Project No. 33016.06 <br /> { February 1996 7 <br /> f <br />